var createError = require('http-errors')
var express = require('express')
var path = require('path')
var cookieParser = require('cookie-parser')
var logger = require('morgan')

var indexRouter = require('./routes/index')
var userRouter = require('./routes/user')
var bodyParser = require('body-parser')

var app = express()

app.use(bodyParser.json())
// 允许所有的请求方式
app.use(function(req, res, next) {
  res.header('Access-Control-Allow-Origin', '*')
  res.header(
    'Access-Control-Allow-Headers',
    'Origin, X-Requested-With, Content-Type, Accept'
  )
  next()
})
// view engine setup
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'jade')

app.use(logger('dev'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, 'public')))

app.use('/', indexRouter)
app.use('/user', userRouter)
// catch 404 and forward to error handler
app.use((req, res, next) => {
  next(createError(404))
})

// error handler
app.use((err, req, res, nex) => {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.render('error')
})

module.exports = app
